netdev - Re: skb_pull_rcsum - Fatal exception in interrupt

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Date:	Mon, 20 Aug 2007 22:24:14 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	johnpol@....mipt.ru (Evgeniy Polyakov)
Cc:	alan@...ie.me.uk, netdev@...r.kernel.org
Subject: Re: skb_pull_rcsum - Fatal exception in interrupt

Evgeniy Polyakov <johnpol@....mipt.ru> wrote:
> 
> Actually if dmesg will show that there is something in fragments, it
> should use pskb_may_pull(). The same bug exist in bridge and vlan, btw,
> so it might be a solution to remove bug_on from skb_pull_rcsum() and
> instead call may_pull?

That would be too easy :) As was the case here, the data pulled
has already been accessed so calling pskb_may_pull in the pulling
function is too late.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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